title: Relative intensity squeezing by four-wave mixing with loss: an analytic model and experimental diagnostic.
abstract: Four-wave mixing near resonance in an atomic vapor can produce relative intensity squeezed light suitable for precision measurements beyond the shot-noise limit. We develop an analytic distributed gain/loss model to describe the competition of mixing and absorption through the non-linear medium. Using a novel matrix calculus, we present closed-form expressions for the degree of relative intensity squeezing produced by this system. We use these theoretical results to analyze experimentally measured squeezing from a 85Rb vapor and demonstrate the analytic model's utility as an experimental diagnostic.
authors.affiliation: ARC Centre of Excellence for Coherent X-Ray Science, University of Melbourne, VIC 3010, Australia. martijn.jasperse@monash.edu
authors.forename: M
authors.initials: M
authors.lastname: Jasperse
authors.forename: L D
authors.initials: LD
authors.lastname: Turner
authors.forename: R E
authors.initials: RE
authors.lastname: Scholten